Martial arts movie name?

yeah i was wondering about the name of a martial arts movie about a new kid in a high school that hes taught by a a black janitor. Also theres a teacher at a fighting arena and the janitor helps his ex partner bust that teacher. I forget the name of it

Martial arts movie name?
I tried searching a little on IMDB and I think it might be called "Showdown" from 1993.





http://imdb.com/title/tt0111174/





Hope that helps.
Reply:i think Dustin is right, "showdown" with none other than tae bo master, haha billy blanks
Reply:Gladiator???